Question 1

Define "hydrogenation reaction."

Accepted Answer

A) Hydrogen is produced chemically. 
B) Double bonds are formed by removing hydrogen. 
C) Hydrogen is removed from water. 
D) Hydrogen is separated from other gases in air. 
E) Hydrogen is added to carbon-carbon multiple bonds such that the bond order is reduced in the final product. 
A) Hydrogen is produced chemically. 
B) Double bonds are formed by removing hydrogen. 
C) Hydrogen is removed from water. 
D) Hydrogen is separated from other gases in air. 
E) Hydrogen is added to carbon-carbon multiple bonds such that the bond order is reduced in the final product.

Question 2

Choose the INCORRECT statement.

Accepted Answer

A) Eutrophication is the process by which a freshwater body becomes filled with algae and depleted of fish. 
B) Eutrophication can be hastened by phosphate fertilizers. 
C) P3H is phosphine. 
D) Carbon has the allotropes,graphite and diamond. 
E) Graphite can be used as a lubricant because layers of molecules slide over other layers of molecules. 
A) Eutrophication is the process by which a freshwater body becomes filled with algae and depleted of fish. 
B) Eutrophication can be hastened by phosphate fertilizers. 
C) P3H is phosphine. 
D) Carbon has the allotropes,graphite and diamond. 
E) Graphite can be used as a lubricant because layers of molecules slide over other layers of molecules.

Question 3

Write a balanced half equation for the following couple: ClO2-(aq)| Cl-(aq)(basic)

Accepted Answer

A) ClO2-(aq)+ 2 H2O(l)+ 4 e- → Cl-(aq)+ 4 OH-(aq)  
B) ClO2-(aq)+ 4 H+(aq)+ 4 e- → Cl-(aq)+ 2 H2O(l) 
C) ClO2-(aq)+ H2O(l)+ e- → Cl-(aq)+ OH-(aq)  
D) ClO2-(aq)+ H+(aq)+ e- → Cl-(aq)+ H2O(l) 
E) ClO2-(aq)+ 4 H2O(l)+ 8 e- → Cl-(aq)+ 4 OH-(aq)  
A) ClO2-(aq)+ 2 H2O(l)+ 4 e- → Cl-(aq)+ 4 OH-(aq)  
B) ClO2-(aq)+ 4 H+(aq)+ 4 e- → Cl-(aq)+ 2 H2O(l) 
C) ClO2-(aq)+ H2O(l)+ e- → Cl-(aq)+ OH-(aq)  
D) ClO2-(aq)+ H+(aq)+ e- → Cl-(aq)+ H2O(l) 
E) ClO2-(aq)+ 4 H2O(l)+ 8 e- → Cl-(aq)+ 4 OH-(aq)

Question 4

Which of these is the strongest oxidizing agent?

Accepted Answer

A) HClO2  
B) HClO3  
C) HClO4  
D) KClO3  
E) KClO4  
A) HClO2  
B) HClO3  
C) HClO4  
D) KClO3  
E) KClO4

Question 5

Choose the INCORRECT statement.

Accepted Answer

A) Oleum is SO3(g)dissolved in H2SO4. 
B) Oleum is called fuming sulfuric acid. 
C) Sulfuric and sulfurous acids are monoprotic. 
D) Acid salts are compounds formed from polyprotic acids by neutralizing one hydrogen. 
E) Thio in a name denotes that one oxygen is replaced by a sulfur. 
A) Oleum is SO3(g)dissolved in H2SO4. 
B) Oleum is called fuming sulfuric acid. 
C) Sulfuric and sulfurous acids are monoprotic. 
D) Acid salts are compounds formed from polyprotic acids by neutralizing one hydrogen. 
E) Thio in a name denotes that one oxygen is replaced by a sulfur.

Question 6

Which of the following is stored under water because of its property of igniting spontaneously upon contact with air?

Accepted Answer

A) P4 (white phosphorus) 
B) S8 (yellow sulfur) 
C) Pb3O4 ("red lead") 
D) K (potassium metal) 
E) I2 (crystalline iodine) 
A) P4 (white phosphorus) 
B) S8 (yellow sulfur) 
C) Pb3O4 ("red lead") 
D) K (potassium metal) 
E) I2 (crystalline iodine)

Question 7

Using VSEPR theory,which of the following descriptions of probable molecular geometry is INCORRECT?

Accepted Answer

A) SF6/octahedral 
B) SiCl4/tetrahedral 
C) BF3/trigonal planar 
D) SnCl4/tetrahedral 
E) ClF3/pyramidal 
A) SF6/octahedral 
B) SiCl4/tetrahedral 
C) BF3/trigonal planar 
D) SnCl4/tetrahedral 
E) ClF3/pyramidal

Question 8

Write the chemical equation for the reaction of potassium superoxide with carbon dioxide to produce oxygen.

Accepted Answer

A) KO(s)+ CO2(g)→ O2(g)+ K(s)+ CO(g) 
B) K2O(s)+ CO2(g)→ O2(g)+ K(s)+ KCO(s) 
C) KO2 + CO2(g)→ 2 O2(g)+ KC(s) 
D) 4 KO2(s)+ 2 CO2(g)→ 2 K2CO3(s)+ 3 O2(g) 
E) 2 KO2(s)+ CO2(g)→ K2C(s)+ 3O2(g) 
A) KO(s)+ CO2(g)→ O2(g)+ K(s)+ CO(g) 
B) K2O(s)+ CO2(g)→ O2(g)+ K(s)+ KCO(s) 
C) KO2 + CO2(g)→ 2 O2(g)+ KC(s) 
D) 4 KO2(s)+ 2 CO2(g)→ 2 K2CO3(s)+ 3 O2(g) 
E) 2 KO2(s)+ CO2(g)→ K2C(s)+ 3O2(g)

Question 9

Given E°red = 1.05 V for XO4-/XO3-,E°red = 1.13 V for XO3-/X2 and E°red = 1.30 V for X2/X-,determine E°red for XO4-/X-.

Accepted Answer

A) 0.435 V 
B) 1.13 V 
C) 3.48 V 
D) 2.05 V 
E) 1.16 V 
A) 0.435 V 
B) 1.13 V 
C) 3.48 V 
D) 2.05 V 
E) 1.16 V

Question 10

Write the equation for commercially extracting bromine from seawater.

Accepted Answer

A) Br2(l)+ 2 Cl(aq)→ Cl2(g)+ 2 Br-(aq) 
B) 2 Br-(aq)+ I2(s)→ Br2(l)+ 2 I-(aq) 
C) 4 Br-(aq)+ Cl2(g)→ Br2(l)+ 2 BrCl(aq) 
D) 2 Br-(aq)+ F2(g)→ Br2(l)+ 2 F-(aq) 
E) 2 Br-(aq)+ Cl2(g)→ Br2(l)+ 2 Cl-(aq) 
A) Br2(l)+ 2 Cl(aq)→ Cl2(g)+ 2 Br-(aq) 
B) 2 Br-(aq)+ I2(s)→ Br2(l)+ 2 I-(aq) 
C) 4 Br-(aq)+ Cl2(g)→ Br2(l)+ 2 BrCl(aq) 
D) 2 Br-(aq)+ F2(g)→ Br2(l)+ 2 F-(aq) 
E) 2 Br-(aq)+ Cl2(g)→ Br2(l)+ 2 Cl-(aq)

Question 11

The noble gas Xe is obtained commercially from air by fractional distillation.

Accepted Answer

A) True 
 B)False

Question 12

"Chlorine-type" laundry bleaches are in reality aqueous solutions of ________.

Accepted Answer

A) NaOCl 
B) NaClO3  
C) HOCl 
D) HOClO3  
E) NaClO2  
A) NaOCl 
B) NaClO3  
C) HOCl 
D) HOClO3  
E) NaClO2

Question 13

Which of the following exists in more different allotropic forms than any other element?

Accepted Answer

A) xenon 
B) tellurium 
C) sulfur 
D) phosphorus 
E) oxygen 
A) xenon 
B) tellurium 
C) sulfur 
D) phosphorus 
E) oxygen

Question 14

Choose the INCORRECT statement.

Accepted Answer

A) Xenon compounds in several different oxidation states have been formed. 
B) The noble gas compounds are very stable. 
C) Xenon compounds are excellent reducing agents. 
D) The Noble gas (except helium)electron configuration has ns2np6. 
E) Although predicted in the 1930s,it was 1962 before noble gas compounds were made. 
A) Xenon compounds in several different oxidation states have been formed. 
B) The noble gas compounds are very stable. 
C) Xenon compounds are excellent reducing agents. 
D) The Noble gas (except helium)electron configuration has ns2np6. 
E) Although predicted in the 1930s,it was 1962 before noble gas compounds were made.

Question 15

In certain automotive catalytic converters,one step involves the catalyzed reduction by carbon monoxide of nitric oxide (nitrogen monoxide)to nitrogen gas,with the carbon monoxide being converted to carbon dioxide.When the equation for this process is balanced,the sum of the coefficients is ________.

Accepted Answer

A) 4 
B) 5 
C) 7 
D) 9 
E) 11 
A) 4 
B) 5 
C) 7 
D) 9 
E) 11

Question 16

A bleaching solution can be prepared by bubbling chlorine gas through dilute sodium hydroxide:
Cl2(g)+ 2 OH-(aq)→ Cl-(aq)+ OCl-(aq)+ H2O(l)
The chlorine required may be generated by the electrolysis of molten sodium chloride.What volume of 0.30 M hypochlorite solution could be prepared from the chlorine generated by such electrolysis using a current of 3.0 A for 25 minutes? Assume 100% efficiency.

Accepted Answer

A) 78 mL 
B) 63 mL 
C) 40 mL 
D) 31 mL 
E) 26 mL 
A) 78 mL 
B) 63 mL 
C) 40 mL 
D) 31 mL 
E) 26 mL

Question 17

Write a balanced half equation for the following couple: 
  NO2-(aq) (basic)

Accepted Answer

A) NO3-(aq) + 2 H+(aq) + 2 e- → NO2-(aq) + H2O(l) 
B) NO3-(aq) + 2 H2O(l)+ 2 e- → NO2-(aq) + 2 OH-(aq) + 2 H2O(l) 
C) NO3-(aq) + H2O(l)+ 2 e- → NO2-(aq) + 2 OH-(aq)  
D) NO3-(aq) + H2O(l)+ e- → NO2-(aq) + OH-(aq)  
E) NO3-v + H2(g) + e- → NO2-(aq) + OH-(aq)  
A) NO3-(aq) + 2 H+(aq) + 2 e- → NO2-(aq) + H2O(l) 
B) NO3-(aq) + 2 H2O(l)+ 2 e- → NO2-(aq) + 2 OH-(aq) + 2 H2O(l) 
C) NO3-(aq) + H2O(l)+ 2 e- → NO2-(aq) + 2 OH-(aq)  
D) NO3-(aq) + H2O(l)+ e- → NO2-(aq) + OH-(aq)  
E) NO3-v + H2(g) + e- → NO2-(aq) + OH-(aq)

Question 18

Bromine can be produced by:

Accepted Answer

A) oxidizing Cl2 with Br-  
B) oxidizing Br- with Cl2  
C) oxidizing Br- with I2  
D) oxidizing I- with Br-  
E) oxidizing F- with Br-  
A) oxidizing Cl2 with Br-  
B) oxidizing Br- with Cl2  
C) oxidizing Br- with I2  
D) oxidizing I- with Br-  
E) oxidizing F- with Br-

Question 19

Which of the following forms a complete set of oxyacids in which it exhibits the oxidation states of +1,+3,+5,and +7?

Accepted Answer

A) fluorine 
B) chlorine 
C) bromine 
D) iodine 
E) astatine 
A) fluorine 
B) chlorine 
C) bromine 
D) iodine 
E) astatine

Question 20

Choose the INCORRECT statement.

Accepted Answer

A) H2O has a high boiling point because of covalent bonding. 
B) Sulfur can form S8 molecules. 
C) Compounds with O-O bonds are reactive. 
D) H2O is a bent molecule. 
E) H2O is a polar molecule. 
A) H2O has a high boiling point because of covalent bonding. 
B) Sulfur can form S8 molecules. 
C) Compounds with O-O bonds are reactive. 
D) H2O is a bent molecule. 
E) H2O is a polar molecule.

Exam 22: Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

Define "hydrogenation reaction."

Choose the INCORRECT statement.

Write a balanced half equation for the following couple: ClO2-(aq)| Cl-(aq)(basic)

Which of these is the strongest oxidizing agent?

Choose the INCORRECT statement.

Which of the following is stored under water because of its property of igniting spontaneously upon contact with air?

Using VSEPR theory,which of the following descriptions of probable molecular geometry is INCORRECT?

Write the chemical equation for the reaction of potassium superoxide with carbon dioxide to produce oxygen.

Given E°red = 1.05 V for XO4-/XO3-,E°red = 1.13 V for XO3-/X2 and E°red = 1.30 V for X2/X-,determine E°red for XO4-/X-.

Write the equation for commercially extracting bromine from seawater.

The noble gas Xe is obtained commercially from air by fractional distillation.

"Chlorine-type" laundry bleaches are in reality aqueous solutions of ________.

Which of the following exists in more different allotropic forms than any other element?

Choose the INCORRECT statement.

Write a balanced half equation for the following couple: NO2-(aq) (basic)

Bromine can be produced by:

Which of the following forms a complete set of oxyacids in which it exhibits the oxidation states of +1,+3,+5,and +7?

Choose the INCORRECT statement.

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Write a balanced half equation for the following couple: ClO₂^-(aq)| Cl^-(aq)(basic)

Given E°_red = 1.05 V for XO₄^-/XO₃^-,E°_red = 1.13 V for XO₃^-/X₂ and E°_red = 1.30 V for X₂/X^-,determine E°_red for XO₄^-/X^-.

Write a balanced half equation for the following couple: NO₂^-(aq)(basic)